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首页> 外文期刊>Plasma physics and controlled fusion >9 GeV energy gain in a beam-driven plasma wakefield accelerator
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9 GeV energy gain in a beam-driven plasma wakefield accelerator

机译：光束驱动的等离子体尾场加速器中的9 GeV能量增益

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摘要

An electron beam has gained a maximum energy of 9 GeV per particle in a 1.3 m-long electron beam-driven plasma wakefield accelerator. The amount of charge accelerated in the spectral peak was 28.3 pC, and the root-mean-square energy spread was 5.0%. The mean accelerated charge and energy gain per particle of the 215 shot data set was 115 pC and 5.3 GeV, respectively, corresponding to an acceleration gradient of 4.0 GeV m(-1) at the spectral peak. The mean energy spread of the data set was 5.1%. These results are consistent with the extrapolation of the previously reported energy gain results using a shorter, 36 cm-long plasma source to within 10%, evincing a non-evolving wake structure that can propagate distances of over a meter in length. Wake-loading effects were evident in the data through strong dependencies observed between various spectral properties and the amount of accelerated charge.
机译：电子束在1.3 m长的电子束驱动的等离子体尾场加速器中，每个粒子的最大能量为9 GeV。光谱峰中加速的电荷量为28.3 pC，均方根能量散布为5.0％。 215个发射数据集的每个粒子的平均加速电荷和能量增益分别为115 pC和5.3 GeV，对应于光谱峰值处的4.0 GeV m（-1）的加速梯度。数据集的平均能量分布为5.1％。这些结果与先前报道的使用较短的36厘米长的等离子源的能量增益结果外推到10％以内相一致，这表明了一种不演化的尾流结构，可以传播超过一米长的距离。通过观察到的各种光谱特性与加速电荷量之间的强相关性，数据中明显表现出唤醒负载效应。

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